Blister (nonthermal), right thigh, initial encounter

This code signifies a non-burn related fluid-filled lesion on the patient's right thigh. This type of blister is typically caused by friction, pressure, or a localized skin reaction, rather than exposure to heat or chemicals.

Use this code for the initial presentation and treatment of a patient with a blister on their right thigh that is not due to a burn. This includes blisters resulting from ill-fitting clothing, prolonged pressure, or allergic contact dermatitis affecting the thigh.

• Always confirm the laterality (right thigh) and the cause (nonthermal) of the blister.
• The "A" suffix indicates an initial encounter for this condition; subsequent encounters will require different seventh characters.
• Code any underlying cause of the blister (e.g., contact dermatitis) in addition to this code, if applicable.